JEE Advanced | 2014Work, Power and EnergyHard
Question
A tennis ball is dropped on a horizontal smooth surface. It bounces back to its original position after hitting the surface. The force on the ball during the collision is proportional to the length of compression of the ball. Which one of the following sketches describes the variation of its kinetic energy K with time t most appropriately? The figures are only illustrative and not to the scale.
Options
A.
B.
C.
D.
More Work, Power and Energy Questions
A constant force F is applied to a body of mass m moving with initial velocity u. If after the body undergoes a displace...A ball ′A′ moving with a speed of 90 ms−1 collides directly with another identical ball ′B′...A body projected vertically from the earth reaches a height equal to earth′s radius before returning to the earth....A bomb of mass 10 kg suddenly explodes in to two parts of masses 2 kg and 8 kg. If total 1500 J kinetic energy is produc...A crane lifts 300 kg weight from earth′s surface upto a height of 2m in 3 seconds. The average power generated by ...